A-Level Computer Science Algorithms Revision Notes

• 1An algorithm must be clear and unambiguous.
• 2Algorithms can be represented using pseudocode or flowcharts.
• 3Efficiency is a key consideration, often measured in terms of time and space complexity.
• 4Common algorithm types include sorting, searching, and graph algorithms.
• 5Algorithms can be iterative or recursive.

An algorithm is like a recipe that tells a computer how to do something step by step. Just like a recipe has clear instructions, an algorithm needs to be precise so the computer knows exactly what to do. They help in solving problems, like finding the fastest route on a map or sorting a list of names. Understanding algorithms is important for writing effective computer programs.